Automatic weighing-machine.



I No. 867,354. PATENTED OCT. 1, 1907.

G. A. DOUGLASS & P. L. JONES. AUTOMATIC WEIGHING MACHINE.

APPLICATION. TILED APB.15, 1907.

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No. 867,354. PATENTED OCT. 1, 1907. G. A. DOUGLASS & P. L. JONES.AUTOMATIC WEIGHING MACHINE.

APPLIOATIOH IILED APB-.15, 1907.

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G. A. DOUGLASS & F. L. JONES.

AUTOMATIC WEIGHING MACHINE.

APPLIOATIOI FILED APB.15, 1907.

n1: NOREIS PEYER (annmwsanm 4.

PATENTED OCT. 1, 1907.

G A DOUGLASS & P L JONES AUTOMATIC WEIGHING MACHINE.

APPLIOATIOI FILED APR 15, x907 UNITED sTA Es PATENT OFFICE.

CLlNl'ON A. DOUGLASS AND FRED L. JONES, OF DENVER, COLORADO.

AUTOMATIC WEIGHING-MACHINE.

Specification of Letters Patent.

Patented Oct. 1, 1907.

Application filed April 16,1907. Serial No. 368,296.

To all 'uxlzma it may concern:

.30 it known that we, CLINTON A. DOUGLASS and FRED L. .loxns, citizensof the United States of America, residing at the city and county ofDenver and State. of \olorado. have invented a new and useful AutomaticWeighingM-achine, of which the following is a specification.

This invention relates to im 'n'ovements in automatic weighing machines.

The object of the invention is to provide a weighing machine comprisinga scale, a bin, and electrically-operated mechanism. connected with thescale and bin for instantaneously cutting off the supply from the binwhen the required weight has been discharged therefrom. Further, toprovide a machine for accurately weighing all commodities. of a dry,granular, nature, and which is arranged to instantly cut off the supplyto the. scale through the medium of a spring-controlled gate, which isheld open by a latch during the discharge from the bin, which latch istripped by the forming of an electric circuit, when the scale bean'itips at the required weight. the machine being so arranged that thecircuit is open at all times when the discharge opening of the bin isclosed, so the scale may be used for weighing other c nnmodities andarticles, and thus serve for general weighing purposes, the scaleplatform being yer-- tically adjustable relatively to the dischargechute. to properly position sacks of varying sizes beneath the same.'lhcse obyects are attained by the mechanism illustrated in theaccompanying drawings, in which:

Figure l, is a front elevation of the improved weighing machine. Fig. isa vertical, longitudinal, sectional view of the same on the line 22 ofFig. 1. Fig. 3, is a bottom or underside view thereof, apart from thescale, the supporting legs being omitted. Fig. i, is an elevation of aportion of the front of the hopper frame, looking at the inner sidethereof, and showing the mechanism secured thereto. Fig. 5, is asectional view through the bracket which supports the circuit cutoutarm. Fig. 3. is a. plan view of the same. Fig. 7, is a perspective viewof the valve which controls the opening in the bottom of the hopper.Fig. 8, is a perspective view of the casting at the bottom of thehopper, having the discharge opening which is normally closed by thevalve. Fig. 9, is a vertical, longitudinal sectional view through themain and auxiliary platforms of the scale, showing the manner ofsupporting and elevating the latter. Fig. 10, is a transverse, sectionalview of the same, showing the auxiliary platform partially raised. Fig.11, is a perspective view of one of the slotted arms secured to the endsof the auxiliary platform. and which steady the upward movement of thesame. And Fig. 12, is a diagram illustrating the electric circuit whichis closed by the tipping of the scale beam, thereby to release the latchand close the cutoff gate.

teferring to the accompanying drawings, the numeral 1, indicates arectangular frame or casing which forms the sides of a hopper 2, andwhich. is supported upon legs 3. The hopper may be of any required size, and its bottom converges from all four sides to a rectangularaperture l, which is preferably centrally located relatively to thewidth of the hopper, but forward of the center relatively to the lengthof the hopper. From this aperture the metal of the hopper bottom dependsslightly to form a short neck 5, in which is secured a semi-circularbottom plate 6, having a discharge aperture 7, and below this plate is aforwardly and downwardly extending chute 8, the sides of which, at theupper end thereof, are rigidly secured to the neck 5. Across the lowerend of the chute and between its sides, is hinged a gate 9, the lowerend of which contacts with the bottom of the chute at a point where itterminates in a vertical bend, and the gate is normally held in thisposition so as to close the lower end of the chute by a spring to bepresently described. The semi-circular plate 6, has a vertical wall 10,at its front end, having an aperture 11, registering with acorresponding aperture in the neck, and a cutoff or valve 12 in the formof a semi-circular plate, rests upon the plate (5, and normally closesits aperture 7. This cut-off has vertical end member 13, with anaperture in line with the aperture in the bottom plate and neck, and arod 14 extends through the front end of the easing, passing through theneck and bottom plate 6, the inner end of which rod is reduced andthreaded and upon this threaded end is secured the cut-off 12. The outerend of the rod 14, is provided with an operating lover or handle 15, bywhich the rod is turned to operate the cutoff, and open the dischargeaperture 7. A collar 16 is secured upon the rod adjacent to the neck ofthe hopper, and an expansion spring 17 is interposed between the collarand neck, which takes up the wear between the end of the cut-off andbottom plate, and thus prevents anything from working between them. Therod upon which the gate E) is pivoted, and to which it is also secured,extends beyond one side of the chute, and is bent to form a crank arm18, to which is secured the lower, right angled end of an arm 19, theupper end of which is curved, and passes through an eye in the upper endof a rock arm 20, which is rigidly secured to the rod 1 1-. The outerend of the arm 19 is threaded and receives a nut, between which and theend of the rock arm is interposed a strong, expansion cushion spring 21,and on the opposite side of the rock arm, and a short distance from it,a nut 22, is secured upon the arm, against which the rock arm strikeswhen the rod 14 is turned, thereby depressing the crank arm 18, andopening the gate 9.

Upon the rod 14, adjacent to the front of the casing, is secured a latcharm 23, to which is secured one end of a strong contraction spring 24,the opposite end of which is secured to the casing. This spring normallyholds the gate 9 closed, by the pressure of the rock arm 20, against thecushion spring 21, by which the arm 19 and crank arm 18 are elevated.

Upon the inner side of the front of the casing is pivotally secured acatch arm 25, which lies at a slight angle to a horizontal plane, theupper end of which lies in the path of the latch arm 23, and is notchedto form a hook or catch 26, which engages the latch in a manner to bepresently explained. The lower end of the catch arm, is connected by alink 27 with the armature 27 of a magnet 28, which is secured to thecasing.

A bracket 29 is secured to the front of the casing adjacent to one side,comprising a vertical member 30, which is secured to the casing, arearwardly extending horizontal member 31, and two members 32 and 33respectively, which depend from the horizontal member at right angles toeach other and to the member 31. The member 32, extends below the member33, and has a large opening 34 in its lower half, through which the endof a scale beam.35 extends. This beam is pivoted upon a standard 36, inthe usual manner, and this standard extends up from one corner of thefoundation frame 37 of the scale, which frame incloses the usual leversupon which the platform of the scale rests, and which are connected withthe scale beam by a rod 38, inthe usual manner.

A rock arm 39, is pivotally attached to the member 33 of the bracket 29,by a threaded stem 40, which projects at right angles from its lowerend. This stem projects freely through an aperture in the said member,and upon it is screwed a spool 41, of fiber or other suitablenon-conducting material around which in a circumferential recess of thespool is secured a metal band 42, one end of which projects a suitabledistance beyond the spool, to form a terminal contact 43 of an electriccircuit to be presently described. In an aperture in the horizontalportion 31 of the bracket, is a bushing 44, also of fiber or othersuitable non-conducting material, having a hole through which a metalpin 45 passes, the lower end of which rests upon the metal band 42, andis held in contact therewith by a blade spring 46, one end of whichexerts a downward pressure upon the pin, while the opposite end of thespring is secured by a screw 47 to a fiber block 48, the screw 47 alsosecuring the end of a wire 49, which extends to one of the magnetspools. The upper end of the rock arm 39, is connected by a rod 50, withthe latch arm 23, so that when the said arm is moved to engage the catcharm 25, the rock arm 39 will also be moved forward, which will turn thespool 41, and bring the terminal contact 43 in the path of the end ofthe scale beam, as shown in dotted lines (Fig. 4), which beam isprovided at its extremity with a thin spring contact 51, which willengage the contact 43 to form an electric circuit, as will be presentlyshown. From the other spool of the magnet, a wire 52 extends to one ofthe poles of a battery 52, and from the other pole a 'wire 53 extendsrests upon the platform 56, and is adapted to be raised above it so asto elevate smaller sacks or bags which are employed, and thus bringtheir mouths immediately below the discharge end of the chute, and thisauxiliary platform is secured to the usual platform in the followingmanner: At each end of the main platform and upon its under side, is adepending post 58, and to each of these posts is secured one end of alazy tong 59, the other ends of which are secured to right angled plates60, secured to the under side of the auxiliary platform, a slot 61,being formed at each end of the main platform to accommodate theseplates and the lazy tongs, and these slots ,are connected by alongitudinal slot 62, which permits the upward movement of an arm 63,which is secured at each end to the second pair of levers of the lazytongs, and at tliepivotal point of these levers. This arm extends up atan incline at each end from its connection with the lazy tongs, andmerges into a horizontal portion which lies directly beneath theauxiliary platform when the same is down, or in its normal position, andfrom the center of the horizontal portion depends a post 64, which fitswithin a hub 65, upon the under side of the main platform. This hub isformed on one side, adjacent to the top, with cars 66, between which apinion 67 ispivoted, which pinion engages teeth 68 on the post 64. Theshaft 69 of the pinion extends out through one side of the mainplatform, and is provided with a notched hub 70, which is engaged by apawl 71, and also with a crank handle 72, by which the shaft may beturned and cause the pinion to engage the teeth on the post 64, thusraising the arm 63, which opens the lazy tongs and elevates theauxiliary platform at a ratio of about four to one relatively to themovement of the arm. In order to steady the upward movement of theauxiliary platform, a downwardly extending arm 73, is secured ateach-end of the said platform, by the same rivets which secure theplates 60, and these arms lie against the outer sides of the lazy tongs,and are provided with slots 74, which extend from their lower ends towithin a short distance of their upper ends, into each of which projectone of the pivot pins of the lazy tong sections. and as the platformmoves up and down, the pins will also move up and down in the slots 74and prevent wabbling of the platform.

The operation of the improved weighing machine is as follows: The hopper2 is supplied with any suitable commodity such as sugar, rice, coffee,or the like, and in order to weigh out any desired amount of thecoinmodity, the slide 76 on the scale beam, is moved to the numbercorresponding to the numberof pounds required, a sack is placed upon thescale below the discharge end of the chute 8. and the operating lever15, is moved in the direction of the arrow until the latch 23 is engagedby the catch arm 25; and simultaneously with this movement of the lever,the rod 14 is turned and the cut-off 12 uncovers the discharge aperture7, While the rock arm 20 depresses the rod 19, which operates the crankarm 18 and opens the gate 9. The material then discharges into the sack,and the moment the scale beam tips its terminal contact 51 touches thecontact 43, and'an electric circuit is formed. through the said contact43, the pin 45, blade spring 46, and wire 49, to the magnet; thence tothe battery, through the wire 52, and from the battery to the scalebeam, thus completing the circuit. The magnet is energized and itsarmature 27 trips the catch arm. 25, and releases the latch which isWithdrawn by the spring 24, thereby reversing the previous movements andclosing the gate 9 and cut-ell 12, and reversing the aiiii 259 to movethe terminal 43 and open the circuit. The operating lever limited in,its backward movement by a stop 77. comprising a pin upon which a rubberbull'er ring is mounted. which lessens the shock oi the blow and thenoise as well. In order that the scale beam may move only a slightdistance in order to contact with the terminal -13, an adjusting screw78 is passed up through the bottom 01' the member 32. ot bracket 29, tolorm a rest [or the beam, and by adjusting this screw, the beam may beraised to the required position relatively to the terminal -13. At theinstant the circuit is l'oriiied and the supply is cut oil ironi thehopper. the quantity oi material in the sack corresponds to the exactweight required; conseipientlv the material which leaves the chute atthis instant and is in midair would constitute over-weight, and in orderto provide for this. and secure the exact weight, the upper scale beamis provided with an additional or compensating slide which can be soadjusted as to provide tor the slight additional weight of the materialin midair. when the cut-oil is closed. The spring 2].. terms a yieldingabutment tor the rock arm 20, and by exerting a constant pressure on thenut at the end ol the rod 19, will take up all slack or wear between therod and crank arm l8. and between the gate 9. and the bottom oi thehopper, thus causing the gate to tit closely agai nst. the hopper andprevent the escape ol material alter the gate is closed.

l'laving described the invention. what we claim as new and desire tosecure by Letters Patent, is:

l. in a weighing machine, the combination with a scale and :l hopperarranged above the scale, of a chute leading t'rom the hopper, having acutoff it its upper end and a gate at its lower end; means forsimultaneously openin: said gate and cuboil: means l'or holding saidgate and ci oi't' open; means connected with the scale beam for releiing said holding means when the beam is tipped, and spring for restoringthe parts to their normal positions.

2. in a weighing machine, a scale, a hopper located above said selehaving an outlet at its lower end; a cutotl' for controlling saidoutlet, a chute below said outlet having a gate at its lower end; meansfor simultaneously opening said gate and cut-oil', and an electricallyoperated latch t'or holding them open, and means for making anelectrical circuit when the scale beam is tipped, whereby to release thelatch, and a spring for closing the gate and cut-oil.

It. in a weighing machine. a scale, a hopper located above said scale.having a discharge outlet; a cutt-ott' which normally closes saidoutlet; a chute below said outlet: having a gate at its lower end; amanually operated rod for operating the cutkott; means connecting therod and gate whereby the gate and cut-oh? are operated simul taueously:an electrically operated latch arm connected in circuit for holding saidgate and cut;-ott' opcn. terminal contacts for closing the circuit whenthe scale beam tipped. whereby to release the latch, and a spring forelos lng the said gate and cut-ell.

-t. In a weighing machine, a scale, a hopper located above the scalehaving an outlet; a chute below said outlet having a gate at itsdischarge end; a cut-oil? to control the hopper outlet; :1 hand-operatedrod for manipulating the cut-otlf; a crank arm on the gate, and meansconnecting the rod and crank arm whereby the gate and cut-off movesimultancously. a latch on said rod; an electrically operated catch armin circuit for engaging said latch; a contact at; one terminal of thecircuit, and a contact on the scale beam, which engages the firstcontact when the beam is tipped to close the circuit and thcreby releasethe latch. and a spring t'or restoring the parts to their normalpositions.

3. in a weighin machine, a scale. a hopper located above the same ha anoutle: a chute below the outlet: having a gate at its lower end; acutot't' tor the h pper outlet: an optt'utiiig' iod connected to thecui-ot't having a handle; a rock arm on said rod, a crank arm on saidgate, and an arm connecting the crank arm and rock arm; a latch on therod; a pivoted catch t'or engaging the latch when the gate and cut-oilare open. a 1 et: and arm-i ture in a make and break circuit with saidgate and cite oil in which said scale beam is included. and terminalcontacts which close the circuit when the beam is tipped. thcrobyrocking the catch arm to rclcase the latch. and a spring for restoringthe latch gate, and cut-oil to their mutual positions.

o. in a weighing machine, the combination with a scale. a hopper locatedabove said scale having an outlet: a chute below said outlet. having agate at its lower end, and a cut-oft tor the hopper outlet. oi means foropening said cut-ol't' and gate siuiultancously. a latch for holdingthem open For a prcdctormincd period. i magnet and armature in a makeand break circuit with said latch. means including contact torminais forclosing the circuit: when the scale beam is tipped, thereby energizingthe magnet and releasing the latch. and a spring for closing thecut-ot'tf and gate.

T. in a ,'oig'hiug machine. the combination with a scale, a hopper abovethe scale having an outlet; a cut-oil for the outlet; a chute below theoutlet havi a. gate at its lower end. oimeans for opening said cut-otfand gate simultancously. a latch for holding them open, a magnet: andarmature in circuit with said hitch terminal contacts for closing thecircuit when the beam is tipped. thereby energizing he magnet andrelea." g the latch. and a spring for closing the gate and cubot't'.

ghing machinc, a scale a frame above said scale supporting a hopperbracket on said l'ramc having an opening through which one end of thescale beam passes. a magnet in said t'rame in circuit with a battery; :1terminal contact: on the bracket, connected with the magnet. and aconnection between the magnet, battery.

is. In a wet tihe cut-oil having a gate at its lower end; an operatingrod connected with tho cut-oi and with the gate whereby both are opencdin unisoi a latch on said rod; a pivoted catch for engaging the latchand holding the gate and cut-oil. open when the rod is turned. one endoi whi h is ci-innected to the m: guet armature. the end ot' said beamwhen tipped being adapted to engage the terminal contact on the bracket.close the circuit. and release the catch. a

spring tor rcsloi ht: movablc parts to their normal position. and meansfor shitting the contact to break the circuit.

Si. in a weighing machin; a scale. a frame above the scalt supporting aboppcr, ii. 1g an outlct in its bottom, a cut-ot't for thc outlet. achute below thc outlct. a gate at tho lower end ol the chute: a rodoxtcuding l'ioni the cut oil.- through thc t'iamc and having anopciat'ing haudlo: av

rock arm on the rod. a crank arm on the gate and an arm connect hocranl 1. rm and rock arm: a lil'f-(li l' on the i'iamo through which thct'orward cud ot' the scalp bcnni passes: a magnet. in said frame incircuit with a battery: a. terminal contact in said bracket, scr-nrodupon a rock arm and insulatcd thcrclrom and from tho brackct; a conncction between said tcrmiual cont. and ma lot. and trout said inmate;through thc battery with the nlc bcam: a

latch on tho cut-oil. rod; :1 pivoted catch arm which onga cs said latchwhen thc rod is turned. ouo cud of which connects with the armature ofthc magnci. a terminal contact on thrcnd oi the scale beam whichoutagesthe con tact on tho bracket when tho beam is tipped. thorobyclosing thc circuit and rcloa iug' thc latch by thc armature: a springl'or rciurning the parts to their nor mal position. and a rod connectingthe rock arm to which one ol the terminals is scclil'itl with the latch.whereby the circuit is broken win-n thc latch is tripped.

it). In a weighing machine, thc combination with a the bracket scale, aframe located above the scale, a hopper supported in the frame having anoutlet; a cut-off for the outlet, and a chute below the outlet, having agate at its lower end pivoted upon a crank arm of means for opening saidgate and cut-off simultaneously including a hand-operated rod secured tothe cut-off and extending through the frame; a rock arm on the rod, anarm connecting said rock arm with the gate crank arm, and having 'aspring on its outer end which exerts a pressure against the rock arm,and an adjustable nut with which the rock arm abuts; an electric circuitin said frame including a battery'and magnet, 'having a terminal contactadjacent to the end of the scale beam, said circuit including the beam;a latch on the rod a catch arm pivoted to the frame having one end inthe path of the latch and the other connected with the ar1nahire of themagnet, a spring for turning the rod and parts connected therewith totheir normal position; a terminal contact on the end of the scale beamwhich engages the first-mentioned contact when the beam is tipped toclose the circuit, and release the latch, and means for breaking thecircuit when the latch is released.

11. In a weighing machine, the combination with a scale; a frame locatedabove the scale, having a hopper provided with an outlet; a cut-off forthe outlet; a chute below the outlet having a gate at its lower end;means for opening said gate and cut-off simultaneously; and meansincluding a latch and catch arm for holding them open; of means fortripping said catch arm when the scale beam tips, comprising a bracketsecured to the said frame, through which the end of the scale beampasses; an electric circuit including a magnet arranged in said framehaving a terminal contact in said bracket adjacent to the end of thebeam, but normally out of its path, and a com tact on the end of saidbeam; means connected with the latch for moving the contact in thebracket, within the path of the beam contact to engage the same when thebeam is tipped a link connecting the latch arm and armature of themagnet, whereby the arm is tripped when the circuit is closed, and thelatch released, and a spring for restoring the latch to its normalposition.

12. In a weighing machine, the combination with a scale, a frame abovesaid scale, a hopper in said frame having an outlet, a chute below theoutlet having a gate at its lower end, a cut-off for the hopper outlet;a hand-operated rod connected with the cut-off and with the gate, alatch on said rod, and a pivoted catch arm, one end of which is in thepath of the latch, of means for releasing the catch arm through thetipping of the scale beam when the required weight of material hasdischarged from the hopper, comprising a magnet the armature of which isconnected with the catch arm, a battery in circuit with said magnet, abracket on the frame through which the end of the scale beam passes; arock arm pivoted to the bracket, and connected with the latch, anon-conducting element on said rock arm having a terminal contactthereon connected with the magnet; a connection between the battery andscale beam, and a spring for returning the latch, cut-off, and gate.

13. In a weighing machine, comprising a scale, a frame above the scalehaving a hopper with a discharge outlet, a cut-off for said outlet, achute below the outlet having a gate in its lower end; means for openingthe cut-off and gate in unison, and a latch for holding them open, and amagnet in an electric circuit, the armature of which is connected withthe latch, said circuit including the scale beam; of a bracket on theframe through which the end of the scale beam passes; a rock armpivotally secured to a non-conducting spool on the rock arm; a springcontact on said spool a pin engaging said contact; a spring which bearson the pin and which connects with the magnet; a spring for closing saidgate and cut-off when the circuit is closed by the tipping of the scalebeam, and means connecting the latch and rock arm, whereby the latter isturned to bring its contact in the path of the end of the scale beamwhen the gate and eut-off are open, and to turn it out of said path whenthe latch is tripped.

14. In a weighing machine, the combination with a scale, a hopper abovethe scale having a discharge outlet; a chute below the outlet, a cutofffor the outlet, and a gate in the lower end of the chute, of means foropening said gate and chute simultaneously, comprising a hand operatedrod secured to the cut-elf; a rock arm on the rod a crank arm on thegate; a push arm connected at one end to the crank arm, the other end ofwhich passes loosely through the end of the rock arm and has a nut onits outer end, a spring interposed between the rock arm and nut, and anabutment on the push arm adjacent to the op-,

posite side of the rock arm; a latch mechanism for holding the gate andcut-off open, and means for automatically releasing the latchsimultaneously with the tipping of the scale beam.

15. In a weighing machine, the combination with a scale, a hopper abovethe scale having an outlet; a chute below the outlet, a cut-off for theoutlet, and a gate in the chute, means for opening the gate and cut-offsimultaneously and a latch for holding them open; of means for trippingthe latch, comprising a magnet, the armature of which is connected tothe latch; a battery one pole of which connects with the magnet and theother with the scale beam; a movable terminal adjacent to the end of thescale beam connected with the magnet; a terminal on the end of the scalebeam which acts in conjunction with the first-mentioned terminal toclose the circuit and release the latch when the beam tips; means forshifting the movable terminal to break the circuit when the latch istripped, and a springvfor closing the gate and cut-off.

16. In a weighing machine, a scale, a frame above the scale having ahopper with an outlet, a chute below the outlet having a gate at itslower end and a cut-off for controlling the hopper outlet; means foropening the gate and cut-oft simultaneously; a latch for holding themopen; a bracket on the frame through which the forward end of the scalebeam passes; an arm pivoted in the bracket having a fiber spool on itspivot stem; a metal band surrounding said spool, one end of whichextends beyond the spool to form a terminal contact, a batter, and amagnet in circuit with the terminal and scale beam, and a contact on theend of the scale beam; a connection between the pivoted bracket arm andthe latch, an adjusting screw in the bracket for varying the position ofthe scale beam relatively to the contact on the pivoted arm; means forconnecting the latch with the armature of the magnet, and a spring forreturning the movable parts to their normal position.

17. In a weighing machine, the combination with a scale, a hopper havingan outlet; a chute below the outlet having a gate a cut-off connected tosaid outlet; means for opening the cut-off and gate, a latch for holdingthem open, and means connected with the scale beam and latch forreleasing said latch at a predetermined time; of an auxiliary platformfor said scale, having lazy tong levers at each end connected with themain platform, an arm connecting the levers a rack on said arm, a pinionin mesh with said rack, and means for turning the pinion to raise thearm and levers and elevate the platform.

18. In a weighing machine, the combination with a scale, of a hopperhaving a semicircular plate in its bottom, with a discharge opening; asemicircular cut-off plate over said opening, a chute below the openinghaving a gate across its lower end; a rod connected with the cutoff, acollar on said rod, and a spring interposed between the collar and theend of the hopper; a crank arm on the gate, a rock arm on the rod and anarm connecting the crank arm and rock arm; a handle on the rod foropening the gate and cut-off, a latch on the rod, a pivoted catch arm,one end of which is in the path of the latch, a magnet in an electriccircuit; a link connecting the catch arm and the armature of the magnet,a terminal contact at the end of the scale beam for closing the circuitwhen the beam tips, thereby to trip the latch; means for breaking thecircuit when the latch is tripped, a spring for returning the movableparts, and a butter for receiving the blow of the returning handle.

In testimony whereof I afiix my signature in presence of two witnesses.

CLINTON A. DOUGLASS. FRED L. JONES. Witnesses:

G. SARGENT ELLIOTT, ADELLA. M. Fownn.

